powerpoint presentation

1. Subtitle

2. Volume
Volume is the quantity of a three-dimensional space or enclosed
figure. The unit of a volume or capacity is the cube of a unit.
Some instruments that are used in measuring volume or capacity
are:
 graduated cylinder
 Beaker
 measuring cups
The are for the volume of any prism is equal to the area of the
base times height.

3. Example 1.
What is the volume of a cube with sides of 15 cm
?
Solution:
V = s3
V = (15 cm)3
= 15cm . 15cm . 15 cm
V = 3,375 cm3

4. Example 2.
What is the volume of a rectangular
prism whose length is 10 in, the width is
3 in, and the height is 4 in.
V = lwh
V = (10 in)(3 in)(4 in)
= 120 in3

5. Example 3.
How much water can a cylinder tank contain if
the radius is 2cm and the height is 4cm ?
V = 𝜋r2h
where r = radius and h = height
V = 𝜋r2h
= (3.14)(2 cm)2(4 cm)
= (3.14) (2cm . 2cm) (4 cm)
= (3.14)(4cm2)(4 cm)
= 50.24 cm3

6. Example 4.
What is the volume of a cylinder whose
diameter is 14 cm and height is 10 cm ?
radius =
𝑑𝑖𝑎𝑚𝑒𝑡𝑒𝑟
2
=
14 𝑐𝑚
2
= 7 cm
To find the volume,
V = 𝜋r2h
= (3.14)(7 cm)2(10 cm)
= (3.14) (7cm . 7cm) (10 cm)
= (3.14)(49 cm2)(10 cm)
= 1,538.6 cm3

7. Angles

8. Name the following angles:

9. Time
How many seconds are there in 1 hour?
Conversion: 1 minute = 60 seconds
1 hour = 60 minutes
1hr x
60 𝑚𝑖𝑛
1 ℎ𝑟
x
60 𝑠𝑒𝑐
1 𝑚𝑖𝑛
= (1)(60)(60 sec) = 3,600 seconds

10. Example 2. How many hours are there in 2 weeks?
Conversion: 1 day = 24 hours
1 week = 7 days
2 weeks x
7𝑑𝑎𝑦𝑠
1 𝑤𝑒𝑒𝑘
x
24ℎ𝑜𝑢𝑟𝑠
1 𝑑𝑎𝑦
= (2)(7)(24hours) = 336 hours